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Targeting the FOXM1-regulated long noncoding RNA TUG1 in osteosarcoma

Yang Li1, Tao Zhang1, Yanhui Zhang1

  • 1Department of Orthopedic Surgery, the First Affiliated Hospital of Harbin Medical University, Harbin, China.

Cancer Science
|August 13, 2018
PubMed

Insights

Taurine Upregulated Gene 1 (TUG1) promotes osteosarcoma growth and spread by regulating miR-219a-5p and activating the AKT pathway. Targeting TUG1 with locked nucleic acids effectively inhibited osteosarcoma proliferation, suggesting its potential as a therapeutic target.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Long noncoding RNAs (lncRNAs) are implicated in osteosarcoma progression.
  • Understanding osteosarcoma pathogenesis and developing novel therapies are critical.

Purpose of the Study:

  • To investigate the role of Taurine Upregulated Gene 1 (TUG1) in osteosarcoma.
  • To explore TUG1 as a potential therapeutic target for osteosarcoma.

Main Methods:

  • Evaluated TUG1 expression in osteosarcoma tissues.
  • Assessed TUG1's in vitro effects on proliferation, migration, and invasion.
  • Investigated the regulatory mechanisms involving FOXM1, miR-219a-5p, and the AKT pathway.
  • Synthesized and tested locked nucleic acids (LNAs) targeting TUG1.

Main Results:

  • TUG1 was upregulated in osteosarcoma and positively regulated by FOXM1.
  • TUG1 promoted osteosarcoma proliferation, migration, and invasion via sponging miR-219a-5p, upregulating PI3KCA, and activating the AKT pathway.
  • A positive feedback loop between AKT pathway activation and TUG1/FOXM1 expression was identified.
  • TUG1-targeting LNAs significantly inhibited osteosarcoma proliferation.

Conclusions:

  • TUG1 acts as an oncogenic lncRNA in osteosarcoma.
  • The TUG1/miR-219a-5p/AKT axis is a key driver of osteosarcoma progression.
  • TUG1 is a promising biomarker and therapeutic target for osteosarcoma.
Keywords:
FOXM1PIK3CATUG1miR-219a-5posteosarcoma

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